calendar.itk

这是一个Linux下的集成开发环境

# ------------------------------------------------------------------
# OPTION: -weekdaybackground
#
# Specifies the background for the weekdays which allows it to
# be visually distinguished from the weekend.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::weekdaybackground {
    if {$_initialized} {
	$itk_component(page) itemconfigure weekday \
		-fill $itk_option(-weekdaybackground)
    }
}

# ------------------------------------------------------------------
# OPTION: -weekendbackground
#
# Specifies the background for the weekdays which allows it to
# be visually distinguished from the weekdays.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::weekendbackground {
    if {$_initialized} {
	$itk_component(page) itemconfigure weekend \
		-fill $itk_option(-weekendbackground)
    }
}

# ------------------------------------------------------------------
# OPTION: -foreground
#
# Specifies the foreground color for the textual items, buttons,
# and divider on the calendar.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::foreground {
    if {$_initialized} {
	$itk_component(page) itemconfigure text \
		-fill $itk_option(-foreground)
	$itk_component(page) itemconfigure line \
		-fill $itk_option(-foreground)
    }
}

# ------------------------------------------------------------------
# OPTION: -outline
#
# Specifies the outline color used to surround the date text.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::outline {
    if {$_initialized} {
	$itk_component(page) itemconfigure square \
		-outline $itk_option(-outline)
    }
}

# ------------------------------------------------------------------
# OPTION: -buttonforeground
#
# Specifies the foreground color of the forward and backward buttons.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::buttonforeground {
    if {$_initialized} {
	if {$itk_option(-forwardimage) == {}} {
	    if {[lsearch [image names] $this-forward] != -1} {
		$this-forward configure \
		    -foreground $itk_option(-buttonforeground)
	    }
	} else {
	    $itk_component(forward) configure \
		    -foreground $itk_option(-buttonforeground)
	}
	
	if {$itk_option(-backwardimage) == {}} {
	    if {[lsearch [image names] $this-backward] != -1} {
		$this-backward configure \
		    -foreground $itk_option(-buttonforeground)
	    }
	} else {
	    $itk_component(-backward) configure \
		    -foreground $itk_option(-buttonforeground)
	}
    }
}

# ------------------------------------------------------------------
# OPTION: -selectcolor
#
# Specifies the color of the ring displayed that distinguishes the 
# currently selected date.  
# ------------------------------------------------------------------
configbody iwidgets::Calendar::selectcolor {
    if {$_initialized} {
	$itk_component(page) itemconfigure $_selected-sensor \
		-outline $itk_option(-selectcolor) 
    }
}

# ------------------------------------------------------------------
# OPTION: -selectthickness
#
# Specifies the thickness of the ring displayed that distinguishes 
# the currently selected date.  
# ------------------------------------------------------------------
configbody iwidgets::Calendar::selectthickness {
    if {$_initialized} {
	$itk_component(page) itemconfigure $_selected-sensor \
		-width $itk_option(-selectthickness) 
    }
}

# ------------------------------------------------------------------
# OPTION: -titlefont
#
# Specifies the font used for the title text that consists of the 
# month and year.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::titlefont {
    if {$_initialized} {
	$itk_component(page) itemconfigure title \
		-font $itk_option(-titlefont)
    }
}

# ------------------------------------------------------------------
# OPTION: -datefont
#
# Specifies the font used for the date text that consists of the 
# day of the month.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::datefont {
    if {$_initialized} {
	$itk_component(page) itemconfigure date \
		-font $itk_option(-datefont)
    }
}

# ------------------------------------------------------------------
# OPTION: -currentdatefont
#
# Specifies the font used for the current date text.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::currentdatefont {
    if {$_initialized} {
	$itk_component(page) itemconfigure now \
		-font $itk_option(-currentdatefont)
    }
}

# ------------------------------------------------------------------
# OPTION: -dayfont
#
# Specifies the font used for the day of the week text.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::dayfont {
    if {$_initialized} {
	$itk_component(page) itemconfigure days \
		-font $itk_option(-dayfont)
    }
}

# ------------------------------------------------------------------
# OPTION: -startday
#
# Specifies the starting day for the week.  The value must be a day of the
# week: sunday, monday, tuesday, wednesday, thursday, friday, or
# saturday.  The default is sunday.
# ------------------------------------------------------------------
configbody iwidgets::Calendar::startday {
    set day [string tolower $itk_option(-startday)]

    switch $day {
	sunday {set _offset 0}
	monday {set _offset 1}
	tuesday {set _offset 2}
	wednesday {set _offset 3}
	thursday {set _offset 4}
	friday {set _offset 5}
	saturday {set _offset 6}
	default {
	    error "bad startday option \"$itk_option(-startday)\":\
                   should be sunday, monday, tuesday, wednesday,\
                   thursday, friday, or saturday"
	}
    }

    if {$_initialized} {
	$itk_component(page) delete all-page
	_redraw
    }
}

# ------------------------------------------------------------------
#                            METHODS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# PUBLIC METHOD: get ?format?
#
# Returns the currently selected date in one of two formats, string 
# or as an integer clock value using the -string and -clicks
# options respectively.  The default is by string.  Reference the 
# clock command for more information on obtaining dates and their 
# formats.
# ------------------------------------------------------------------
body iwidgets::Calendar::get {{format "-string"}} {
    switch -- $format {
	"-string" {
	    return $_selected
	}
	"-clicks" {
	    return [clock scan $_selected]
	}
	default {
	    error "bad format option \"$format\":\
                   should be -string or -clicks"
	}
    }
}

# ------------------------------------------------------------------
# PUBLIC METHOD: select date_
#
# Changes the currently selected date to the value specified.
# ------------------------------------------------------------------
body iwidgets::Calendar::select {{date_ "now"}} {
    if {$date_ == "now"} {
	set time [clock seconds]
    } else {
	if {[catch {clock format $date_}] == 0} {
	    set time $date_
	} elseif {[catch {set time [clock scan $date_]}] != 0} {
	    error "bad date: \"$date_\", must be a valid date string, clock clicks value or the keyword now"
	}
    }

    _select [clock format $time -format "%m/%d/%Y"]
}

# ------------------------------------------------------------------
# PUBLIC METHOD: show date_
#
# Changes the currently display month to be that of the specified 
# date.
# ------------------------------------------------------------------
body iwidgets::Calendar::show {{date_ "now"}} {
    if {$date_ == "now"} {
	set _time [clock seconds]
    } else {
	if {[catch {clock format $date_}] == 0} {
	    set _time $date_
	} elseif {[catch {set _time [clock scan $date_]}] != 0} {
	    error "bad date: \"$date_\", must be a valid date string, clock clicks value or the keyword now"
	}
    }

    $itk_component(page) delete all-page
    _redraw
}

# ------------------------------------------------------------------
# PROTECTED METHOD: _drawtext canvas_ day_ date_ now_
#                             x0_ y0_ x1_ y1_
#
# Draws the text in the date square.  The method is protected such that
# it can be overridden in derived classes that may wish to add their
# own unique text.  The method receives the day to draw along with
# the coordinates of the square.
# ------------------------------------------------------------------
body iwidgets::Calendar::_drawtext {canvas_ day_ date_ now_ x0_ y0_ x1_ y1_} {
    set item [$canvas_ create text \
		  [expr (($x1_ - $x0_) / 2) + $x0_] \
		  [expr (($y1_ -$y0_) / 2) + $y0_ + 1] \
		  -anchor center -text "$day_" \
		  -fill $itk_option(-foreground)]

    if {$date_ == $now_} {
	$canvas_ itemconfigure $item \
	    -font $itk_option(-currentdatefont) \
	    -tags [list all-page date text now]
    } else {
	$canvas_ itemconfigure $item \
	    -font $itk_option(-datefont) \
	    -tags [list all-page date text]
    }
}

# ------------------------------------------------------------------
# PRIVATE METHOD: _configureHandler
#
# Processes a configure event received on the canvas.  The method
# deletes all the current canvas items and forces a redraw.
# ------------------------------------------------------------------
body iwidgets::Calendar::_configureHandler {} {
    set _initialized 1

    $itk_component(page) delete all
    _redraw
}

# ------------------------------------------------------------------
# PRIVATE METHOD: _change delta_
#
# Changes the current month displayed in the calendar, moving
# forward or backward by <delta_> months where <delta_> is +/-
# some number.
# ------------------------------------------------------------------
body iwidgets::Calendar::_change {delta_} {
    set dir [expr ($delta_ > 0) ? 1 : -1]
    set month [clock format $_time -format "%m"]
    set month [string trimleft $month 0]
    set year [clock format $_time -format "%Y"]

    for {set i 0} {$i < abs($delta_)} {incr i} {
        incr month $dir